/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * 
 */
package com.android.sdkuilib.internal.repository.content;

/**
 * Interface for active package filter which traverses the entire package collection,
 * once to collect aggregate information by method visit() and then a second time,
 * selecting packages by method accept().
 * @author Andrew Bowley
 *
 * 29-11-2017
 */
public abstract class PackageVisitor {

    /** 
     * Visit a new package definition, in case we need to adjust the filter dynamically. 
     * @param pkg Package item
     * @return boolean set true to continue traversal of packages
     */
	public boolean visit(PkgItem pkg) {
		return false;
	}

    /** 
     * Checks whether this is the package meets criteria
     * @param pkg Package item
     * @return boolean set true if package is to be accepted
     */
    public boolean accept(PkgItem pkg) {
    	return false;
    }

}
